How can I reduce the time for simulation using this model? [FEK0 2023.1]

Question

feko_bending_aps_KD_fixed_a_decrease(perfect_layer).out

Hello, my simulation with general MOM solver is taking more than four hours when I run this design with only 30 number of points, I tried MLFMM to run it faster but MLFMM is showing "feko internal error", see the attached design model of CADFEKO and the .out  file for MLFMM error , kindly tell me the way how can I run this model in between one hour to check my result?

feko_bending_aps_KD_fixed_a_decrease(perfect_layer_parametric).cfx

Zeina · Accepted Answer

From the .out file you have shared, it seems that you are not using parallel runs:
NOTE    35127: You are running a sequential version of Altair Feko, but it was detected that your machine has more than one core. For best performance, it would be recommended to run the parallel Feko Solver

In order to accelerate the runs you can start by allowing more cores to be used (Sove/Run tab activate Parallel)

On another hand, switching to MLFMM in this case does not seem to be a good idea, again, as mentioned in the .out:
WARNING 32945: It is highly recommended to use the conventional MoM, since the MLFMM near field matrix fill exceeds 20% of the full MoM matrix

Torben Voigt · Accepted Answer

Hi Srabonty,

Again you chose  mesh of lambda/50. This is why it takes so long to run. I told you twice already ;)

Please use standard mesh, maybe with refinements along the patch edges.

Best regards,

Torben